the head of news, helen bohdan and her deputy steve mitchell are both stepping aside. a man who used to be a marketing guru for pepsi is now temporarily taking over at the top. >> today i've announced that we are establishing one very simple line of command in news, that's the first task for me as a new acting director general coming in, so i can deliver the journalism that is trusted. >> tonight, this program apologizes, a key allegation in a report about child abuse was wrong. >> reporter: the scandal that caused such consternation here boiled down to this. a failure to broadcast allegations of child abuse about a bbc personality jimmy savile, followed by the rushing on air of an inaccurate report. the politicians are demanding answers about who actually made those decisions. >> we need to find out who was consulted, who had the authority to take that decision, and on what grounds they possibly thought this program should be broadcast. >> will she agree that the next victim of this crisis must not be the independence of the bbc? the only organization that can restore